Ice dams: what causes them
Warm attic air melts snow, the water refreezes at the cold eave, and the dam pushes water back under the shingles. Clear gutters, correct pitch, and open soffit vents are what keep it from starting.
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What we've learned working rooflines across the north Denver metro, written out so you can use it yourself.
Warm attic air melts snow, the water refreezes at the cold eave, and the dam pushes water back under the shingles. Clear gutters, correct pitch, and open soffit vents are what keep it from starting.
Clear the troughs after the last leaves drop, flush each downspout, check that hangers are tight, and make sure extensions carry water at least four feet from the foundation before the first freeze.
Look for dented troughs holding standing water, split downspout seams, and granules piled at the outlets. Dented gutters that no longer drain will keep freezing all winter.
Roof area, pitch, and valley locations decide it. Big or steep planes shed water faster than a 5-inch trough can carry, and that water goes over the front lip.
Away from the house — four feet minimum, further on clay soil or a negative grade. Water dumped at the wall is the most common cause of a wet basement.
Gutters sagging between hangers, screws backing out, peeling paint on the board, or a soft spot when you press it. Nothing hung on rotted fascia stays put.
Have a question these don't cover? Check the FAQ or ask Ethan directly.
Ethan Jones comes out, measures the roofline, and gives you a clear written number. Free, no pressure, and you decide on your own timeline.
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